Wheel for traction-engines.



No. 771,945. PATENTED OCT. 11, 1904. D. T. SPRY.

WHEEL FOR TRACTION ENGINES.

APPLICATION FILED APR. 28. 1904.

no MODEL.

UNITED STATES Patented October 11, 1904.

PATENT OFFICE.

WHEEL FOR TRACTION-ENGINES.

SPECIFICATION forming part of Letters Patent No. 771,945, dated October11, 1904. Application filed April 28, 1904. Serial No. 205,344- (Nomodel.)

To all whom it may concern.-

Be it known that I, DANIEL T. SPRY, a citizen of the United States ofAmerica, residing in the township of Pymosa, in the county of Cass andState of Iowa, have invented certain new and useful Improvements inCarriage- VVheels for Traction-Engines; and I do declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and tothe letters of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in the wheels which support andcarry tractionengines; and it consists in the peculiar construction andcombination of the parts that will be more fully set forth hereinafterand particularly pointed out in the claim.

The object of my invention is to provide ready means to prevent thecarriage-wheels, especially the drive-wheels, of traction-engines fromslipping when moving over muddy roads or ground. I attain this object bythe device illustrated in the accompanying drawings, in which Figure 1is a side elevation of a portion of a drive-wheel of a traction-enginehaving my device applied thereto. Fig. 2 is an enlarged detailed planview of the frame of my device. Fig. 3 is an enlarged detailedperspective view of the tooth and threaded rod connected thereto. Fig. 4is an enlarged detailed perspective view of the hand-wheel and its axle.Fig. 5 is an enlarged detailed side elevation of my device; and Fig. 6is a plan view of a portion of the rim of the drive wheel, showing slotsadapted to receive the teeth D D.

Similar letters refer to similar parts throughout the several views.

A represents a portion of an ordinary drive- Wheel of a traction-enginehaving the rim (0.

B is a hand-wheel having firmly secured thereto or made integraltherewith the axle 0, which axle is provided with the threaded aperturee and has firmly secured thereto and made integral therewith the flangeb.

D is a tooth which passes through and works in the slot (4 in the rim ofthe drive-wheel and which is provided with the threaded rod f, whichpasses through and fits the threaded aperture 0 of the hand-wheel axle.

E is the frame of my device, which is composed of the two parts a and n,bolted together by the bolts m m and provided with the aperture it, intowhich the axle c of the hand-wheel is fitted and held therein by itsflange b. The frame E is firmly secured to the inner side of the rim ofthe drive-wheel by bolts which pass through the rim and the lugs g g ofthe frame.

It is apparent that by turning the handwheel the tooth D can be movedeither outward or inward and the distance which it projects beyond therim of the drive-wheel adjusted.

.'There should be a sufiicient number of my devices secured to the rimof the drive-wheel to cause one or more of the teeth D D to be always incontact with the muddy ground when passing over muddy roads or ground.

I have found by experience that when moving traction-engines over muddyroads the ordinary lugs 2', secured to the rim of the drivewheel, areinsuiiicient to prevent the drivewheel from slipping, but that by usingdrivewheels provided with my devices they can readily be prevented fromslipping by adjusting the teeth D D so they will extend through the mudand engage with the solid ground. By turning the hand-wheels B B theteeth D D can be readily adjusted, so as to extend through mud ofvarious degrees of thickness or readily drawn inward so as not tointerfere when passing over dry and hard roads.

' When desired, my devices can also be secured to the rims of and usedupon the front carriage-wheels of traction-engines in the same manner asthey are securedv to and used upon the drive-wheels.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The combination of the drive-wheel A, the frame E secured to the rim ofthe drive-wheel and having the aperture h, the hand-wheel B In testimonywhereofI affix my signature in which is slecured to the frame by itsflanged the presence of two witnesses.

aXle 0, an the tooth D which passes loosely through the slottedwheel-rim a and which is DANIEL SPRY' 5 provided with a threaded rod fwhich passes Witnesses:

through and fits the threaded aperture 0 of the SAMUEL H. RUDOLPH, axle0, substantially as described. LOUIS H. PINE.

